Herbert maclfln



(NoModeL) H. MAOHIN.

GOUPLING FOR WATER GLOSET BOW'LS, &0. No. 398338. Patented Mar. 5, 1889.

76 cmm.

N. PETERS. Pho-Limn m her, Washlnglon, D,c.

Nirnn Stars IIERBERT MAClllN, ()l TRENTON, NEW JERSEY, AHSHQNOR TU Tllh.

ATENT rrron PKQ UI'FABLPI POTTERY COMPANY, OF SAHE PLACE.

COUPLING FOR WATER-CLOSET BOWLS, &0.

SPECIFICATION ferming part of Letters Patent No. 398,8 38, dated Marc-h5, 1889.

Application filed November 15, 1888. $erial No. 290,872. (Ne model.)

Be it known that I, llnnennr MACHIN, ot' i Trenton, in the County ofMercer and State of New Jersey, have invented a certain new and usefulImprove'nent in Couplings for \Vater-Closet lowls and other (frockery'or Earthenware Articles oi' which the following i is a specification.

It has been long proposed to lock pipes lo water-closet bowls andanalogous erockery articles by provsions analogons to what is known as abayonet-joint; but, so far as 1' am aware, all have the crockery portiontoo weak to properly endure the strains to which theyare liable to besubjected. I have discovered that it is practicable to make the metalliccoupling-piece with less breadth ot' wings than usual and to make theeroekery with greater breadth, and, furtherinore, that by making w thecoupling-wings each with an o'ftset on one edge, and making the crockerywith reeesses having corresponding ottsets, I can form the front ormouth of the crockery portion with an oval Outline without offset andsecure a degree of strength in the crockery front not heretoforeattained. The wings on the 1netallic part need not have oftsets on eachedge. It is, on the contrary, preferable to form the wings each with oneedge gradnally contracted.

My crockery pipe is round on the outside and has an oval inlet withinner recesses on each side of the short axis of the oval. recesses areso arranged that 'when I insert a metal pipe with two partial fianges orwings, arranged and proportioned as shown t'arther on, the said fiangesor wings make the metal pipe substantially oval, like the oval openingin the crockery pipe. Being' smaller it readily goes in when applied inthe correct posi tion. Then one quarter-turn carries the wings into therecesses in the sides of the oval hole in the crockerg: In other words,the lon g axis of the metal oval locks in the 'ecesses of the short aXisof the oval in the croekery. These lock it strongly. Afterward I applycement to fill all the spaces remaining in the joint.

In what I esteem the most complete form of the invention I use a rubberor leather washer and White lead, and I put a nut on the thread These lWasher to make the joint more eertainly water-tight-the same as plunbersput rubber and white lead on steam-joints to insure tightness.

The accompanying drawvi'gs form a part of this specification andrepresent what I consider the best means of carrying out the invention.

Figur-e l is a side elevation. The remaining figures are on a largerscale. Fig. 2 is a 3 central longitudinal section. Fig. 3 is a face viewof a portion. Fig. i is a section on the line a in Fig. 2, and Fig. 5 isan end View of a portion.

Similar letters ot' reference indicate corresponding parts in all thefigures where they occur.

A is a crockery water-closet bowl, and B a metallic coplig-pipe which isunited there 4 with. The bowl is forned with a thick lip, i A', on itsexterior, surrounding the hole a, at

a little distance therefrom. The exteror of this lip is eircnlar. Theinterier presents an i oblong` aperture, a'. The inner face of the lipis undercut part way around, terminating in a radial shoulder or offset,as indicated by a (See dotted lines in Fig. and strong lines in Fig.

The inner end of the coupling-pipe B is formed with two wings, B' B', onits exteror. Each wng is formed with a square ofiset at 5 one edge, andthe other edge gradually narrowing in an approximately volute cnrveuntil its exterior is in or near the general cylin` drieal surface ofthe -pipe B. The main portion of B is threaded, as indicated by b.

C is a thin metallic utmatching the threads b, and D is a gasket orpacking-ring of vuleanized rubber with woven fabric.

E E' is a fianged pipe, which is joined to the coupling-pipc B by aninternally-fianged nut or union, G a packing-ring, F, being interposedin the ordinary nanner. The mode of joining the pipes B and E is wellknown and has been long approved.

In uniting the metallic coupling-pipe B to the croekcry article A A' thenut C and elastic washer I) must be screwed back out of the way, orpreferably not yet applied. The winged end of the pipe B is applied withits win gs B' coinciding with the long` axis of the IOO hole a'. It isintroduced'n this position and then turned a quarter-revolution, so asto bring the square end or edge of each wing B' against thecorresponding square shoulder or offset in the corresponding recess, a?.Holding it in this position, the space within the oval hole CL' notoccupied by the corrcsponding wings B' is filled with inelted sulphur orother senii-liquid materiah m, which will subsequently harden and insurethe tightness of the joint in the same nanner as joints have long beenstopped by cement in water-pipes. The surfaces are thinly eoated withwhite lead in a soft condition, and the gasket or elastic Washer D isput in place and the nut C is screwed down thereon, making a handsomefinish, and by the aid of the white lead and the adhesion inducedthereby making additional security for the tightness of the joint.

My joint is strong. The relatively small wings B' may, by Virtue of thegreat strength oftheir material, easily bear the strain to which theycan be subjected; but the lip A', by Virtue of the relative weakness ofits material, is not naturally of equal strength. My construction favorsthe Weak material. There is no salient point in the crockery which canbe engaged by the fiange of the pipe so as to subject it to eXcessivestrain. The undercut spaces a in which the wings are engaged by turning,are strengthened by the form employed. The Construction resists thestrain, pulling the pipe B away from the bowl A by square bearingspresented by the working-faces of the Wings B'.

Pa-rts of the invention can be used Without the whole. I can dispensewith the soft coating on the elastic Washer D or with the elastic Washeritself. In such case I can dispen se with the nut C. I prefer the wholeused i'cgether.

I claim as my invention- 1. In a coupling for water-closet bowls, thecrockery lip A', having the oval lole a' and un'dercut recesses a thelatter each formed with a square offset at one edge, and thecoupling-pipe B, having wings B', each having a corresponding offset, incombination with each other and With a filling, m, adapted to tightenthe joint, while the looking of the wings holds the parts together, asherein specified.

2. The bowl. A, having a lip, A', with the oval aperture a' and recessesa the latter having each a square offset, in conbination With ascreW-threaded coupling-ppe, B, having wings B', each with a squareofiset, and with the nut C and elastic Washer D, all arranged to servesubstantially as herein specified.

In testimonywhereof I have hereunto set my hand, at Trenton, New Jersey,this 9th day of November, 1888, in the presence of two subscribingwitnesses.

HERBERT MACHIN.

Wtnesses:

JAMES H. HAMMOND, EDVVARD C. STOVER.

